The very first thing their Defense attorney (and the FBI, and local cops) would do is check to see when the Young Guys say they dropped her off at the Hotel... and then check the timestamps on the Holiday Inn camera.
If the Allegro guys disappear well before the "drop off" time....or are still on the camera well after "drop off" time...then they got an alibi on videotape.
Either "we weren't there before"...or "we were still there after" would be their alibi.
Now how would the 3 young guys get them to stay on camera at the right time...and then get them to leave the camera at the right time... in order to frame them?
Another thing that bothers me. I heard that one of the gang banger"s father was connected to the police force in some way. If this is true, then things can be "manipulated".